These aluminum adapters will allow for the use of 12 gauge flares, blanks and signaling rounds in your 37mm launcher.  They are bored to a depth that will not permit the loading of a full sized shotgun shell.  They WILL seat ALL of the 12ga. signaling rounds and blanks that we sell.

***IMPORTANT***
This product uses flares ONLY. Never use regular 12 gauge ammunition in these adapters. It will destroy the adapter.